Hildebrand-Brunner drying chambers


HIGH VAC - The world's only square vacuum dryer

What makes the HIGH VAC special?

Our vacuum dryers are square and track loaded. The heat doesn’t get to the lumber via air, but via steam. This results into a much better distribution of moisture and heat. Unlike high temperature kilns, which also work with steam (or partly), the temperature doesn’t get higher than 40 – 90°C. This is possible because of the low pressure, which goes down to 100 mbar. The bounded water becomes steam (inside the lumber) and can easily flow out. This reduces massively the drying time and prevents damages to the lumber.

For challenging lumber, we invented the steam pulsation process. This means constant alternation between saturated steam and superheated steam with Extra-conditioning, (Breaks) resting, Reconditioning – ideal for fast and stress-free lumber drying.